Machine for turning irregular forms



UNITED STATES PATENT OFFICE.

Z. F. NANCE, OF RICHMOND, VIRGINIA.

MACHINE FOR TURNING IRREGULAR FORMS.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, Z. F. NANoE,o' Richmond, in the county of Henricoand State of Virginia, have invented a new and Useful Improvement inMachines for Turning Irregular Forms; and I do hereby declare that thefollowing is a full, clear, and eXact description of the same, referencebeing had to the annexed drawing, forming part of this specification, inthe several igures of which similar characters of reference denote thesame part.

Figure l is a top view of the machine. Fig. 2 is a vertical section onfc fc. Fig. 3 is a vertical section on y y.

The nature of my invention consists in certain devices hereinafter to bedescribed for turning irregular forms.

In the drawing A is the main frame. C is a secondary frame swinging fromframe A upon pins z', and supporting the pattern carriage C. The cutterhead B is hollow, and rotates upon shaft B driven by pulley B. Aroundits mouth are arranged the cutters R.

Upon the carriage C is the pattern P, journaled at m and n and rotatedby cog wheel connection f f; the former upon the pattern and the latteron screw shaft g, meshing with the long pinion a on main trame; saidlong pinion being rotated from the driving pulley B by reason of band w,pulley w, shaft y, and wheels .e z as shown in Figs. l and 3.

The screw Z meshes with the nut of lever Z upon secondary frame C, andby its rota- 22,302, dated December 14, 1858.

tion produces the traversing of the carriage C.

The pattern P is hollow and has the stick to be turned passing throughit, as seen at E. This piece E is centered at each end as shown at m m/fthe frame C having an extension c for that purpose.

Across the main frame runs a lever D, having an adjustable bow (Zembracing the pattern P; so that when the lever D is held down by a pine', the frame C will rise and fall as the inequalities of the patternpress against the bow d. This movement of the pattern gives a similarmovement to the piece E revolving with it, causing the cutters to impartto the piece a form similar in every respect to the pattern P.

rPhe lever D constitutes one bearing of shaft y, so that by removing pinc and lifting lever D, wheel .e will be raised from wheel e and Jframe Celevated. This frame movement carrying the piece E clear of the cutters.

I claim" Passing the piece to be turned through the pattern, and thecombination of the same with the swinging frame C and parts connectedtherewith as and for the purposes set forth.

In testimony whereof, I have hereunto signed my name before twosubscribing witnesses.

Z. F. NANCE. lVitnesses GEO. PATTEN, IV. I. CLARY.

